What does the rdw sd and rdw cv?

Well to all the people who are interested:

These are hematological parameters that indicate an underlying anemic condition.

The normal RBC is spherical and biconcave with a diameter of 6-8 micrometer. any variation in size is termed as anisocytosis and in shape is termed as poilikocytosis. These variations are seen in anemic conditions like iron or folate or Vitamin B12 deficiency or others.

Earlier when blood samples were analyzed manually under microscope the terms aniso and poikilocytosis were used, when such variations were observed, but with the advent of computerized automated blood analysis methods newer terms like RDW, RDW-SD, RDW-CV have come into place, these terms also indicate unusual variations in the size and shape of RBC which are highly indicative of a possible Anemic conditions.

RDW stands for Red Cell Distribution Width

RDW- SD stands for Standard Deviation in RDW

RDW-CV stands for Coefficient Variation of RDW

These are technical terms used in computer interpretation of the given blood samples

If your reports show abnormal values do consult your physician .